Abstract: A duct assembly may include a first duct, a second duct, and a flexible joint assembly coupling the first duct to the second duct. The flexible joint assembly may include a bellows having a first end and a second end and a plurality of convolutions located therebetween, and a gimbaled joint assembly. The gimbaled joint assembly may include a first support surrounding the first end of the bellows and a first portion of the plurality of convolutions, a second support surrounding the second end of the bellows and a second portion of the plurality of convolutions, and a gimbal ring assembly operably coupled to the first support and the second support. The gimbal ring assembly may include a ring body and a plurality of flexure hinges interconnected with the ring body.

Abstract: A sealed joint assembly for transmitting high temperature and high pressure fluid between adjoining ducts in, for example, an aircraft bleed air system, includes a gimbal ring and two annular clevises. Each clevis includes a pair of axially-extending lobes that each includes a bore hole extending therethrough. The bore holes of the clevis lobes may each align with a respective bore hole formed within the gimbal ring, through which a pin may be inserted to couple the clevises to the gimbal ring. The clevises and gimbal ring may be formed using additive manufacturing, to produce component geometries and topologies that reduce the overall weight of the joint assembly while maintaining or improving its structural integrity. For example, the clevis lobes may include a plurality of gaps, such that the remaining material forms a shear web. The gimbal ring may also include strut or truss networks to enhance structural integrity.

Abstract: An expansion joint fitting for conveying liquid includes a radially inner bellows defining a liquid-conveying passage for conveying liquid between the first and second longitudinal ends of the expansion joint fitting. A radially outer bellows is disposed radially outward from and extending around the radially inner bellows. An annular plenum is defined between the radially inner bellows and the radially outer bellows.

Abstract: A dust hoot for a moveable joint is provided. The dust boot includes a boot body disposed annularly about an axis and defining an interior cavity. The boot body has a housing opening at a first longitudinal end for attaching to a housing and a shank opening at a second longitudinal end opposite the first longitudinal end for sealingly engaging a shank portion of a ball stud of the ball and socket joint assembly. The boot body defines a plurality of longitudinal strengthening portions formed therein and extending longitudinally at an acute angle relative to the axis in a relaxed condition of the dust boot for resisting rotation of the dust boot in response to a rotation of the ball stud and for improving sealing of the dust boot with the shank portion of the ball stud.

Abstract: A heat dissipating device includes a variable volume unit; a driving unit for driving a volume change of the variable volume unit; and a fluid passage connected to the variable volume unit; wherein the fluid passage includes a heat dissipating section and a heat absorbing section, the variable volume unit and the fluid passage are filled with a liquid coolant; when the driving unit drives the variable volume unit to decrease its volume, the liquid coolant is discharged from the variable volume unit to the fluid passage; when the driving unit drives the variable volume unit to increase its volume, the liquid coolant flows back to the variable volume unit via the fluid passage; the liquid coolant conducts heat to an exterior when it flows through the heat dissipating section, and the liquid coolant absorbs heat from the exterior when it flows through the heat absorbing section.

Abstract: A compensator assembly, including a metal bellows (2) with a weld end or connecting end (3, 4) in each case on both sides, at least one single-part or multipart guide tube (11), two support rings (5, 6), of which one is connected to a weld end (3, 4) in each case, and an anchoring box (7), which is supported on end faces (5a, 6a) of the support rings (5, 6) facing away from the metal bellows (2), wherein the support rings (5, 6), on the end face (5a, 6a) facing away from the metal bellows (2), have support elements (16) projecting in a direction of the anchoring box (7), and/or the anchoring box (7), on an end face (8a, 9a) facing the respective support ring (5, 6), has support elements (16) projecting in a direction of the support ring (5, 6).

Abstract: A mounting structure of an intercooler pipe including one end connected to an intercooler and another end connected to a connection port of a throttle body. The mounting structure may include a bellow having a plurality of wrinkles consecutively protruding from a surface of the intercooler pipe along a longitudinal direction and a cutting portion formed on the bellow and having a protrusion height different than a protrusion height of the wrinkles Each wrinkle may be formed substantially in a ring shape. The cutting portion may be arranged to form a row of a line shape along the longitudinal direction of the intercooler pipe such that a force required for bending the intercooler pipe toward a specific direction is different than a force required for bending the intercooler pipe toward other directions. The intercooler pipe may be connected to the connection port of the throttle body to be rotated.

Abstract: In-line pressure balanced expansion joint for thermal expansion compensation of piping and ducting of circular cross section with the tie rods located inside the device consists of one large, central expansion joint and two smaller, mirror-symmetrical, side expansion joints (2a) and (2b). Three expansion joints are made of bellows (3) and (9) and of straight pipe spools and annular plates welded to each other. Tie rods (15a) and (15b) are placed on a circle at equal angular intervals which connect the sides of the expansion joints. The inner surfaces of the sides of the central expansion joint are reinforced with welded rectangular radial ribs and triangular ribs. The compactness and functionality allows expansion joints for all types of piping and ducting and is particularly suitable for making expansion joints for piping and ducting with a diameter greater than 2 meters.

Abstract: A flex joint assembly includes a damper mounted to a first scissors linkage and a second scissors linkage.

Abstract: A flexible bellows used in a pipe coupling includes composite convolutions having integral extensions forming one or both of an outer shield or inner liner to enhance performance of the coupling. Embodiments incorporate dampers, hangers and convolution modifications. Various embodiments are disclosed.

Abstract: A piping system comprising: a main pipe; a first pipe member connecting an equipment nozzle and the main pipe via a first bellows; a second pipe member connected to a side part of the main pipe; a third pipe member connected to the other end of the second pipe member via a second bellows; first and second tie rod support members fixed to the first and third pipe members; tie rods that interconnect the tie rod support members; and an anchor that sets a portion of the main pipe as a fixed point. Lengths of the pipe members between the tie rod support members are determined so that the first bellows contracts by thermal expansion of the equipment nozzle, the first pipe member, and the pipe member of the main pipe below the anchor, and the second bellows contracts by an amount equally to that of the first bellows.

Abstract: New expansion compensating device and manufacturing method of the same, of those used in solar power absorber tubes featuring a dual bellows design where the height of the waves of the bellows is not regular, but the second wave is greater (where it supports more load) and diminishes towards the ends. With this design improving the performance of the receiver is achieved because it shortens the length of the device and consequently there is more surface area receiving solar radiation as well as it decreases the necessary diameter of glass tube and therefore its cost.

Abstract: A solar receiver assembly includes a tube adapted to carry a heat transfer medium and a glass envelope surrounding the tube and having opposed ends. An interface is disposed between each end and the tube so as to seal and support the tube from the envelope. And the receiver includes a prism disposed over the interface to divert incident radiation away from the interface and toward the tube and/or the glass envelope. The prisms may be provided with reflective and/or anti-reflective coatings to further optimize diversion of radiation from the interface.

Abstract: In-line pressure balanced expansion joint for thermal expansion compensation of piping and ducting of circular cross section with the tie rods located inside the device consists of one large, central expansion joint and two smaller, mirror-symmetrical, side expansion joints (2a) and (2b). Three expansion joints are made of bellows (3) and (9) and of straight pipe spools and annular plates welded to each other. Tie rods (15a) and (15b) are placed on a circle at equal angular intervals which connect the sides of the expansion joints. The inner surfaces of the sides of the central expansion joint are reinforced with welded rectangular radial ribs and triangular ribs. The compactness and functionality allows expansion joints for all types of piping and ducting and it is particularly suitable for making expansion joints for piping and ducting with a diameter greater than 2 meters.

Abstract: A piping system comprising: a main pipe; a first pipe member connecting an equipment nozzle and the main pipe via a first bellows; a second pipe member connected to a side part of the main pipe; a third pipe member connected to the other end of the second pipe member via a second bellows; first and second tie rod support members fixed to the first and third pipe members; tie rods that interconnect the tie rod support members; and an anchor that sets a portion of the main pipe as a fixed point. Lengths of the pipe members between the tie rod support members are determined so that the first bellows contracts by thermal expansion of the equipment nozzle, the first pipe member, and the pipe member of the main pipe below the anchor, and the second bellows contracts by an amount equally to that of the first bellows.

Abstract: A coupling closure is provided for substantially environmentally-sealed reversible closure of containers or hose elements. At least one first flexible band with at least one first closure element is provided. At least one second flexible band is provided with at least one second closure element that is complementary to the first closure element. A top side of the first band comprises at least one third closure element and a top side of the second band comprises at least one fourth closure element. Also a coupling closure is provided for substantially environmentally-sealed reversible closure of containers or hose elements comprising a plurality of frame bands and articulation devices. Immediately adjacent frame bands are connected with one another via at least one articulation device between the immediately adjacent frame bands to form a circumferential folding frame wherein inner sides of at least two adjacent or opposing frame bands are foldable one on top the other to form a closure.

Abstract: A connection piece for the articulate connection of a first and a second tube, in particular a first and a second tube of a hot air supply system fed from the power unit of an aircraft, with the possibility of compensating for tolerances, wherein an interval between a tube end of the first tube and a tube end of the second tube is enclosed by a sealing mechanism. The tube ends each have a support ring, wherein the support rings are connected to each other by at least two connection elements arranged outside the sealing mechanism. At least two metal bellows are preferably used as the sealing mechanism, which enable almost maintenance-free operation. Steel ropes are preferably used as connection elements. In particular, tubes with a diameter of up to 160 mm, which are intended, depending on the material used, to conduct media with temperatures of up to 8500 C and pressures of up to 20 bars, can be connected in an articulate manner to each other by means of the connection piece.

Abstract: The invention relates to a seal intended for sealing an axis pair, whereby the axes rotate in the same direction, the inner one of the axes is inside the outer axis and the phase difference of the axes is arranged to remain within predefined limits. The seal (200) is a tubular seal made of an elastic material and comprises at least two tube sections (202, 204) fixed to each other. Folds (212, 214) of the at least two tube sections (202, 204) have opposing twisting angles. One end of the seal (200) is fastened to the outer axis and the other end is fastened to the inner axis, and the seal (200) is arranged to twist by a torque proportional to the phase difference between the axes.

Abstract: The transducer-protector device for medical apparatus comprises a housing formed by two half-shells, a membrane defining a gas-permeable anti-contamination barrier, a female Luer first connection port, a second connection port for connection to a flexible tube, a helical bellows-conformed deformable member. The device, which operates in a service line of an extracorporeal blood circuit associated to a dialysis machine, is for protecting the machine from contaminating agents originating from the circuit. The device is simple and economical to manufacture.

Abstract: An exhaust gas bellows expansion joint for joining a first section and a second section of an exhaust pipe. The exhaust gas bellows expansion joint including a first corrugated pipe for conveying exhaust gas through the joint, a protective sleeve, which is inserted in the first corrugated pipe, a second corrugated pipe, which coaxially surrounds the first corrugated pipe, and an annular space between the first corrugated pipe and the second corrugated pipe for the passage of liquid through the joint.

Abstract: A coupling system, comprising: a first bellows element; a fluid handling component; and a coupling assembly releasably connecting the first bellows element to the fluid handling component for maintaining a secure connection between the first bellows element and the fluid handling component. The coupling assembly comprises a first flange attached to the first bellows element and a second flange attached to the fluid handling component, the first and second flanges alignable with each other to form a locking space; a locking member sized to fill the locking space; and a sealing structure positioned between the first bellows element and the fluid handling component to form a seal proximate the effective diameter of the first bellows element. A kit and a method for connecting a bellows element to a fluid handling component are also disclosed.

Abstract: A low-profile integrated catalytic converter with a coupling assembly comprises a catalytic converter with a coupling assembly integrated into the inlet end of the catalytic converter, which is attached to a mounting flange or exhaust pipe. The coupling assembly comprises two or more flexible bellows, joined together at their periphery, and containing a plurality of undulating ribs. The respective ends of the flexible bellows assembly are secured to the catalytic converter. A coupling travel limiter can optionally be concentrically disposed within the bellows assembly to limit the flexibility of the coupling and direct an exhaust gas stream into the catalytic converter.

Abstract: A flexible bellows tube connecting pipes in a system such as a vehicle exhaust system. Various embodiments are disclosed, with each including two conduit sections having mating corrugations that overlap to provide a seal while allowing the two sections to rotate in response to torsion loading. Different configurations of the interfitting corrugations and related structure are disclosed in the different embodiments.

Abstract: A bellows-type pipe junction for mechanically joining the spaced-apart ends of two pipes in a liquid-tight manner includes two sleeve sections fitted onto the two pipe ends and a flexible offset section joined at its two ends to the two sleeve sections by respective flexible bellows-type joints. The flexible offset section and the flexible bellows-type joints provide a fluid-tight junction while accommodating axial and radial offsets between the two pipe ends. The pipe junction is especially suitable for joining the pipes of an aircraft drain mast.

Abstract: A double bellows seal including a plurality of rings having first and second end rings, a middle ring, a first bellows, and a second bellows. The first bellows is formed from a flexible material that is sealingly connected between the first end ring and the middle ring, and it has a twist bias in a first rotational direction relative to an axis of the rings. The second bellows is formed from a flexible material that is sealingly connected between the second end ring and the middle ring. The second bellows has a twist bias in a second rotational direction relative to an axis of the rings that is opposite that of the first rotational direction.

Abstract: Integrated quick connect tubing that includes a quick connect retainer that is integrated as a cuff into corrugated tubing, most preferably corrugated tubing fabricated from a rigid plastic. The quick connect retainer is preferably fabricated from polypropylene and is most preferably spin welded to the interior of a sleeve at one or both ends of the corrugated tubing to attach the quick connect stepped body or retainer to one or both ends of the corrugated tubing.

Abstract: A method and apparatus for monitoring a pipeline expansion joint, in particular the conditions of a pressure-balanced expansion joint. A sensor is positioned so as to sense one or more physical characteristics of a pipeline fluid flow. A signal generated by the sensor(s) is received by a suitably configured electronic controller. The controller, in turn, is connected to a flow control valve, that is movable between at least an “off” or “no-flow” position, and a flow permitting position, connecting a source of compressible medium and the volume confined between the two (or more) balancing bellows of a pressure-balanced expansion joint. An accumulator may also be provided, that may be connectable via the flow control valve, to the confined volume. The controller will be operably configured to cause the valve to be moved, in response to signals received from the sensor(s) that correspond to stored numerical data in the controller that represent different potential operating conditions.

Abstract: Vibration decoupler apparatuses, for decoupling vibrations, for example, between first and second the components of an internal combustion engine exhaust system. The flexible connector apparatus is provided for connecting first and second components in the exhaust system, and includes a resilient flexible sealing member (bellows) for accommodating relative movement between the first and second components. The flexible connector apparatus includes an annular vibration damping member connecting a down pipe to a mounting member for permitting restricted axial, lateral and angular movement of the downpipe, relative to the mounting member, which may be affixed to an exhaust manifold, for example. The apparatus also includes a sealing construction which enables weldless, gasketless connection of the bellows. An alternative construction positions the vibration damping member between the decoupler apparatus and the downstream component.

Abstract: A connector assembly for connecting a catalytic converter assembly to a muffler and tailpipe assembly includes first and second flexible portions, and a middle portion disposed between the flexible portions. The middle portion includes a catalyst element for modifying exhaust gases passing from the catalyst assembly to the muffler and tailpipe assembly.

Abstract: A corrugated hose (2) has a holder (1) to releasably fix the corrugated hose (2) in an angled or curved position in relation to a lengthwise projection of the inner tube, whereby the holder (1) fits snugly into at least one recess or corrugation valley (4) of the corrugated hose (2). The holder has two legs (5, 6), and the legs (5, 6) can snugly fit the corrugated hose (2) which curves between the two legs (5, 6) in a position ready for use. At least one of the snug fits is made with a cut-out (8) open at the side in which the corrugated tube (2) can be inserted from the side under elastic deformation (FIG. 1).

Abstract: Thick-walled steel pipe is corrugated for the purpose of managing axial load when the pipe is used in an earth-restrained application. For example, the pipe may be used as casing in a cyclic steam stimulation well, where the axial loads are induced as the casing is heated and cooled.

Abstract: A flexible line element, particularly for exhaust pipes of internal combustion engines of motor vehicles, is characterized in that it has at least two interconnected, metal bellows provided with cylindrical joining ends and at least one of the bellows is helically corrugated. This and/or the bellows are telescoped and two bellows are connected at only one of their joining ends. A line element constructed in this way is on the one hand torsion-soft, so that it does not transfer any torsional stresses to adjacent components, and on the other is also stable in the case of high torsional stresses.

Abstract: The invention is a flexible line element, particularly for exhaust pipes of internal combustion engines of motor vehicles. At least two interconnected, metal bellows are provided with cylindrical joining ends and at least one of the bellows may be helically corrugated. The bellows may be telescoped. The two bellows, whether in line or telescoped, are connected at only one of their joining ends. A line element of the invention is on the one hand torsion-soft to not transfer any torsional stresses to adjacent components, and on the other is also stable in the case of high torsional stresses.

Abstract: A gas tight articulated connecting element for piping elements includes: a flexible gas tight tube element to be securely connected with the piping elements; a supporting element disposed at a distance from the tube element at an exterior region thereof and including a plurality of supporting parts, each of the supporting parts being configured to be connected at one end thereof to a piping element adjacent thereto, and at another end thereof to an adjacent other end of an adjacent one of the supporting parts; and a flexible connection device disposed between adjacent ones of the supporting parts for connecting said another end to said an adjacent other end, the flexible connection device including an intermediate part made of an elastomer and being connected with the supporting parts in a locking connection.

Abstract: Flexible convoluted conduit covered with braid made by cold forming the braid to an end of the conduit. Cold forming can involve magneforming. Resulting conduit is not brazed, welded, or annealed, thereby facilitating construction of convoluted conduits with higher working pressures and/or less braid material.

Abstract: The present invention provides a retractable conduit, which includes two retaining brackets, two adapters, a sliding pipe, two elastic retainers, two dust covers, bolts and two O-rings. The sliding pipe penetrates through hollow adapter at each end. Bond the adapter to the retaining bracket with an O-ring and bolts. A dust cover is nested on the front of the adapter, an elastic retainer is set in the adapter for fill the gap between the sliding pipe and the interior surface of the adapter. The sliding pipe can be adjusted to an appropriate length or angle due to the motion of earth crust or a great changing of temperature is happened while it is placed underground, also prevents from silt or dust seeping into the pipe, without affect the quality of the stored liquid.

Abstract: In a flexible pipe having upstream side and downstream side inner tubes disposed internally of a bellows tube, the interference of the bellows tube with the inner tubes is prevented and the inner opening ends of both the inner tubes are disposed in the very close proximity to each other to prevent the impingement of a fluid on the bellows tube. For this purpose, the flexible pipe includes a bellows tube 1 having bellows portions 1e, 1f on the both sides thereof with each of the bellows portions composed of ridges 1c and valleys 1d and a straight tube portion 1g formed at the center of the bellows tube 1 in the longitudinal direction and having a diameter expanded to substantially the same diameter as that of the ridges 1c. The, the inner opening end 2d of one of inner tubes 2 and the inner opening end 3e of the other of the inner tubes 3 are disposed within a range of the straight tube portion 1g of the bellows tube 1 and face each other in close proximity to each other.

Abstract: The flexible coupling assembly has a liner with a radially outwardly extending flange and a bellows with a radially outwardly extending flange connected together by weld joint at a predetermined location on an end surface of the radially outwardly extending flanges. A connecting flange is movably maintained on the bellows between the outwardly extending flange of the bellows and a flexible portion of the bellows. The flexible coupling assembly is particularly suited for use in an exhaust system of a combustion engine.

Abstract: A double walled manifold assembly for a cryogenic fluid, such as liquid oxygen, is assembled as alternating bellows portions and tee portions. The inner bellows portions have a greater axial length than the outer bellows portions to enable welding of an inner conduit assembly with the outer bellows portions surrounding the inner bellows portions. The outer tee portions are fabricated in two pieces which are welded together and to the outer bellows portions to complete the assembly.

Abstract: The invention proposes an apparatus for damping or absorbing vibrations in an exhaust system of a vehicle, having two connection ends, at least one bellows and absorbing cushions, in which bellows are arranged on either side of said cushions. This leads to a better standardization, adaptability and design of such an apparatus and in particular in the case of the same angular movement the two bellows are less stressed or greater angular movements are possible.

Abstract: This pipe system has a pressurized feed conduit and an outflow conduit for a hydraulic fluid. It furthermore has parts (6, 8, 10) for connection to a hydraulically actuable device.The intention is to create a pipe system which is improved as regards safety of operation and fire protection and has a smaller space requirement. This is achieved by the fact that the pressurized feed conduit is arranged inside the outflow conduit, this arrangement being maintained right into the interior of the hydraulically actuable device.

Abstract: A bellows that is affixable by way of a connecting sleeve to a machine part, and is made of polymer material and has folds formed, at least in one partial area, in the shape of a screw thread. The connecting sleeve is provided with at least two retaining elements that are distributed in the circumferential direction and project inwardly and/or outwardly from the top surface of the connecting sleeve, the retaining elements being able to be forced into engagement with snap-in locking elements of the machine part, which exhibit a groove following the direction of the folds.

Abstract: A cross-fire tube for use in connecting adjacent combustors in industrial gas turbines includes a relatively flexible main spring body portion (12,50, 68, 76) extending between two end portions, each end portion including a connector (22, 26, 54, 72, 90) adapted to engage a collar portion of one of the respective combustors. Each of the connectors includes a plurality of spring loaded fingers adapted to engage at least an inside surface of a respective collar portion. When secured in place between adjacent combustor liner covers, the cross-fire tube is in axial compression. The main spring body may comprise a saw cut spring tube (12), a coil spring (52) covered by a wire reinforced ceramic fabric (66), a corrugated wire mesh fabric (70) heat treated to impart spring characteristics thereto; or a bellows type tube (76).

Abstract: Jointed pipe connections are used for axial, angular and lateral oscillation decoupling of tubular pipe segments. A jointed pipe provided for connection with a first pipe segment has an annular fold, against which a pressed wire ring rests respectively on the right and left sides. The pressed wire rings are enclosed by an annular cuff which, by means of a pipe socket, forms a cuff pipe used for a connection with a second pipe segment. This prior art arrangement permits only a limited annular movement. The permitted pivot angle diminishes as pipe diameter increases. In accordance with the invention, a plurality of joint areas are provided. The jointed pipe (3) located on the inside has annular folds (4) at both ends. Annular pads (5) rest against these and are enclosed in pairs by annular cuffs (6). The cuffs (6) have pipe sockets (6a) by means of which they are connected with the pipe segments. The cuffs (6) are connected in a gas-tight manner by a sealing bellows (9, 29).

Abstract: A flexible connector for connecting adjacent ends of substantially successive pipes in an exhaust system. An input coupler and an output coupler have at least one articulated joint arranged between them. A flexible tubular bellows substantially surrounds at least part of the input and output couplers, as well as the at least one articulated joint. A flexible closure member substantially surrounds the bellows to protect it from external forces.

Abstract: A flexible joint has a bellows, a first support cover connected with one end of the bellows, a second support cover connected with another end of the bellows, a pin fixed to the first support cover, a cap fixed to the second support cover, and a buffer member constructed of wire mesh and disposed between the first support cover in combination with the pin and the second support cover in combination with the cap. The buffer member includes two portions different in modulus of elasticity. Due to the structure, gap generation between the first support cover combined with the pin and the second support cover combined with the cap is prevented.

Abstract: An in-line, pressure balanced universal expansion joint for a piping system has a central bellows and opposite first and second end bellows secured to the opposite first and second ends of the central bellows. A first gimbal assembly pivotally links the outer end of the first end bellows to the second end of the central bellows. A second gimbal assembly links the outer end of the second end bellows to the first end of the central bellows. Each gimbal assembly has a gimbal ring pivotally linked to the outer end of the respective end bellows via a first linkage and to the respective end of the central bellows via a second linkage for pivotal movement about two perpendicular pivot axes.

Abstract: An expansion joint for coupling two conduits in a manner allowing relative axial movement therebetween and including an external shell or housing receiving the ends of both conduits and receiving an end of at least one of the conduits in a manner allowing relative axial movement of the end of the conduit in the shell, a flexible metal bellows in the shell connected to the shell and to the end of the one conduit for allowing relative axial movement between the ends of the conduits and for providing a fluid seal between the interiors of the conduits and the end of the expansion joint which receives the one conduit, and characterized by a safety flow restrictor operatively associated with the shell and with the one conduit for restricting fluid flow out the end of the expansion joint which receives the one conduit in the event the bellows fails to maintain the afore-mentioned fluid seal.

Abstract: An expansion joint assembly for use in a piping system has a central tubular bellows and opposite first and second end bellows secured to respective opposite first and second ends of the central bellows. Outer tubular ends of the respective first and second end bellows are linked to the second and first ends, respectively, of the central bellows via first and second elongate link members. The first link member is pivotally connected to the outer end of the first end bellows at one end and secured to the second end of the central bellows at its opposite end. The second link member is pivotally connected to the outer end of the second end bellows at one end and secured to the first end of the central bellows at its opposite end.

Abstract: The present invention relates to a pipe fitting device which connects pipes that flow a high temperature fluid such as engine exhaust gas. The device includes a first cylindrical block, a second cylindrical block and a follower ring disposed between a ring portion of the first cylindrical block and an edge member of an opening of a second cylindrical block. A spring pushes the follower ring to the second cylindrical block side. Flexible connection sleeves connect the flanges of the first cylindrical block and the second cylindrical block and through holes are drilled into the first and second cylindrical blocks.